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3 years ago

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A chocolate company selects 50 random packages to check their weight. It finds that 2 packages have an incorrect weight. How man

y packages out of 2000 should the company predict have an incorrect weight.

1 answer:

Gre4nikov [31]3 years ago

3 0

Answer:

80

Step-by-step explanation:

A company selects 50 random packages from which two of them have an incorrect weight. That is to say: 4% of the packages are incorrrect.

Now if the company selects 2000 packages, we could predict that 4% of them could be incorrect. We know that 2000×0.04 = 80.

Therefore, 80 out of 2000 packages are expected to have an incorrect weight.

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consider the function f(x) = x2 2x – 15. what are the x-intercepts of the function? left-most x-intercept: ( , 0) right-most x-i

eimsori [14]

we have

$f(x)=x^{2} +2x-15$

we know that

The x-intercept is the value of x when the value of the function is equal to zero

so

in this problem

Find the roots of the function

equate the function to zero

$x^{2} +2x-15=0$

Group terms that contain the same variable, and move the constant to the opposite side of the equation

$x^{2} +2x=15$

Complete the square. Remember to balance the equation by adding the same constants to each side

$x^{2} +2x+1=15+1$

$x^{2} +2x+1=16$

Rewrite as perfect squares

$(x+1)^{2}=16$

Square root both sides

$(x+1)=(+/-)\sqrt{16}$

$(x+1)=(+/-)4$

$x=-1(+/-)4$

$x1=-1+4=3$

$x2=-1-4=-5$

$x^{2} +2x-15=(x-3)(x+5)$

therefore

<u>the answer is</u>

the x-intercepts are the points $(3,0)$ and $(-5,0)$

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3 years ago

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X to the second power equals 14

yaroslaw [1]

X to the second power equals 14 is the same as:
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we can take the square root of both sides to get:
$x= \sqrt{14}$
because we cannot simplify the 14 inside the square root symbol, our final answer is
$x= \sqrt{14}$

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Draw and write to solve. Explain

Luda [366]

Answer:

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Step-by-step explanation:

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4 years ago

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Oksi-84 [34.3K]

Answer:

The correct option is A.

Step-by-step explanation:

The given expression is

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Taking out the common factor.

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